I have thoughts but first I read https://www.trustpilot.com/review/referhire.com and have to write if that's true you and I should never go there. Spamming, harvesting your contacts? Bad company IMO. Also "Spam which breaches GDPR laws." means, well, they are probably old school spammers.

Dock? As in Dock.io? https://cryptorated.com/ico-reviews/dock-io/ kicks it around. I see no reason to go there as well. I haven't researched this one much but it sounds like one of those blockchain ideas. And that's a problem. Such can make data "Hard To Kill."